Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What are the two main groups of minerals?
a. | metallic and nonmetallic | c. | rock-forming and
powder | b. | silicate and nonsilicate | d. | carbonate and silicate |
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2.
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Which of the following groupings lists only minerals?
a. | quartz, coal, basalt | c. | pyrite, halite, brass | b. | obsidian, gypsum,
corundum | d. | fluorite,
feldspar, copper |
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3.
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Which of the following are chatoyancy and asterism associated with?
a. | cat’s cradle and six-sided star | c. | brilliancy and
dullness | b. | cat’s eye and star | d. | two minerals |
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4.
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A mineral is described as fluorescent when it
a. | glows under fluorescent light. | c. | glows under ultraviolet
light. | b. | grows under fluorescent light. | d. | grows when electrically
charged. |
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5.
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Because many minerals are similar in color and certain elements may change the
color, color
a. | is not a good identifier. | c. | is a restrictive
property. | b. | is the best identifier. | d. | is stable. |
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6.
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Unstable atomic nuclei decay over time into stable nuclei, causing a mineral to
be
a. | phosphorescent. | c. | radioactive. | b. | fluorescent. | d. | an ion. |
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7.
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What is chatoyancy?
a. | mineral shows metallic luster | c. | mineral shows nonmetallic
luster | b. | mineral shows a cat’s-eye effect | d. | buoyancy |
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8.
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A phosphorescent mineral glows
a. | after an ultraviolet light is turned off. | c. | in ultraviolet
light. | b. | after a fluorescent light is turned off. | d. | at all times. |
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9.
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What is asterism?
a. | a cat’s eye shape appears when a mineral reflects light | b. | a six-sided star
shape appears when a mineral reflects light | c. | a circular shape appears when a mineral
reflects light | d. | a square shape appears when a mineral reflects light |
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10.
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Which of the following is NOT one of the four criteria for determining whether
or not a substance is a mineral?
a. | it is inorganic | b. | it occurs naturally | c. | it has a consistent
chemical composition | d. | it has a shiny
surface |
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11.
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What is radioactivity?
a. | another form of magnetism | b. | unstable atomic nuclei decay over time,
releasing particles and energy | c. | stable atomic nuclei decay over time, releasing
particles and energy | d. | contamination of organisms and
minerals |
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12.
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The color of a mineral in powdered form is called the mineral’s
a. | luster. | c. | cleavage. | b. | streak. | d. | fracture. |
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13.
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A mineral is a natural solid that usually is
a. | inorganic, with characteristic physical properties. | b. | organic, with
uncharacteristic physical properties. | c. | organic, with characteristic physical
properties. | d. | inorganic, with uncharacteristic physical properties. |
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14.
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The hardest mineral on the Mohs hardness scale is
a. | talc. | c. | gypsum. | b. | diamond. | d. | flourite. |
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15.
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Fluorescence is the property of a mineral that causes it to
a. | become chatoyant under phosphorescent light. | b. | glow after
ultraviolet light is turned off. | c. | glow under ultraviolet
light. | d. | develop asterism under ultraviolet light. |
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16.
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Density is the ratio of
a. | the volume of a substance to the mass of the substance. | b. | the mass of a
substance to the weight of the substance. | c. | the mass of a substance to the hardness of the
substance. | d. | the mass of a substance to the volume of the
substance. |
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17.
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Light that is reflected from a mineral’s surface is called
a. | luster. | c. | radioactivity. | b. | steak. | d. | refraction. |
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18.
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Cleavage is the tendency of a mineral to
a. | break unevenly with surfaces that are irregular. | b. | break suddenly and
without warning. | c. | split along specific planes, forming flat surfaces. | d. | split jaggedly,
forming irregular surfaces. |
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Essay; Worth 4 pts each. Write in comlete sentences; One paragraph
minimum for full credit.
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19.
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Write a short essay about the usefulness of the Mohs hardness scale, giving
examples of minerals it can be used to identify.
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Problem; Extra Credit. 2 pts each. Show your work/math to receive
full credit.
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20.
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What is the area of a crystal face that has one side measuring 2.1
cm2 and one side measuring 3.6 cm2? The formula for finding the area of a
rectangle is area = lw. Show your work.
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21.
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What is the volume of a cubic crystal with one face that is 16 cm2?
The formula for finding the volume of a rectangular box is volume = lwh. Show your work.
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22.
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What is the volume of a rectangular crystal with a length of 1.9 cm, a width of
1.1 cm, and a height of 1.5 cm? The formula for finding the volume of a rectangular box is volume =
lwh. Show your work.
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